Non-contact data acquisition system for water meters and flow rate data acquisition devices

Abstract

This invention proposes a contactless data acquisition system, a water meter, and a flow data acquisition device. The contactless data acquisition system includes a water meter and a flow data acquisition device. The water meter includes an NFC chip, a flow data acquisition device, and a water meter control unit. The flow data acquisition device includes an NFC reader, a communication module, and a control module. This invention separates the communication module from the metering base meter by using the water meter and flow data acquisition device. If one of them fails, only the corresponding component needs to be replaced, eliminating the need for complete replacement and reducing costs. Furthermore, when one component needs to be changed, only the appropriate approval needs to be obtained, accelerating product iteration.

Description

Technical Field

[0001] This utility model relates to the field of water meter technology, and in particular to a non-contact data acquisition system, a water meter, and a flow data acquisition device. Background Technology

[0002] With the deepening of smart city and smart water management construction, traditional mechanical water meters are gradually being replaced by IoT water meters to achieve remote data collection, valve control, and intelligent management of water usage. Currently, most mainstream IoT water meters on the market adopt an integrated design, that is, integrating the communication module and the water meter body into the same housing.

[0003] However, this integrated architecture has revealed many inherent flaws in its practical application. When the electronic modules (such as communication units and batteries) or the water meter body malfunction, the entire meter must be replaced. This not only increases the cost of the equipment itself but also leads to high on-site construction costs.

[0004] Furthermore, because the communication module and the metering base are integrated, they are considered a single product. When either the communication module or the metering base changes, a new application must be made for the entire set of metering instrument type approvals (such as JJG 162-2019), radio equipment type approvals (SRRC), and telecommunications equipment network access licenses (CTA) as a new model water meter. This certification process is lengthy and expensive, severely hindering rapid product iteration and market promotion. Utility Model Content

[0005] This utility model provides a non-contact data acquisition system, a water meter, and a flow data acquisition device, including: a water meter and a flow data acquisition device; The water meter includes: an NFC chip, a flow acquisition device, and a water meter control unit; The water meter control unit is connected to the NFC chip and the flow acquisition device, respectively. The flow acquisition device is used to acquire the flow data of the fluid in the pipe where the water meter is located, and output it to the water meter control unit. The water meter control unit is used to write the flow data into the NFC chip; The traffic data acquisition device includes: an NFC card reader, a communication module, and a control module; The control module is connected to the NFC card reader and the communication module respectively; After the NFC reader reads the tag data from the NFC chip, the NFC reader outputs the tag data to the control module; The communication module is used to transmit data with a preset device; The control module is used to parse the tag data, obtain the traffic data, and output the traffic data to the preset device.

[0006] Optionally, the flow acquisition device includes: an impeller metering module and a non-magnetic signaling needle plate; The impeller metering module is mechanically connected to the non-magnetic signaling needle plate; When the impeller in the impeller metering module is driven by the fluid, it rotates and outputs a mechanical rotation signal to the non-magnetic signaling needle plate. The non-magnetic signaling needle disk is electrically connected to the water meter control unit and is used to convert the mechanical rotation signal into a corresponding pulse electrical signal and output it to the water meter control unit. The water meter control unit is used to calculate the pulse electrical signal and obtain the flow rate data of the fluid.

[0007] Optionally, the flow acquisition device further includes: a sensor; The sensor is electrically connected to the water meter control unit and is used to detect the conduction status of the valve and feed the status back to the water meter control unit. The water meter control unit writes the flow data and valve status data into the NFC chip.

[0008] Optionally, the water meter further includes: a first power supply module; The first power module is connected to the NFC chip, the water meter control unit, and the non-magnetic signal transmitter, respectively, and is used to provide the corresponding operating voltage to the NFC chip, the water meter control unit, and the non-magnetic signal transmitter.

[0009] Optionally, the communication module includes: an NB-IoT module, a 4G module, a LoRa module, and a LoRaWAN module; The control module is electrically connected to the NB-IoT module, 4G module, LoRa module and LoRaWAN module respectively.

[0010] Optionally, the traffic data acquisition device further includes: a second power supply module; The second power module is connected to the NFC reader, the communication module, and the control module respectively, and is used to provide the corresponding operating voltage to the NFC reader, the communication module, and the control module respectively.

[0011] Optionally, the second power module includes a connected battery module and a voltage conversion circuit; The voltage conversion circuit is connected to the NFC reader, the communication module and the control module respectively, and is used to convert the output voltage of the battery module and output the corresponding working voltage to the NFC reader, the communication module and the control module respectively. The flow data acquisition device also includes: a voltage detection module; The detection end of the voltage detection module is connected to the output end of the battery module, and the output end is connected to the control module; the voltage detection module is used to detect the output voltage value of the battery module and output it to the control module. The control module is used to output a power alarm signal to a preset device through the communication module when the voltage of the battery module is less than the preset voltage.

[0012] This utility model also proposes a water meter that is applied to the aforementioned non-contact data acquisition system; The water meter includes: an NFC chip, a flow acquisition device, and a water meter control unit; The water meter control unit is connected to the NFC chip and the flow acquisition device, respectively. The flow acquisition device is used to acquire the flow data of the fluid in the pipe where the water meter is located, and output it to the water meter control unit. The water meter control unit is used to write the flow data into the NFC chip.

[0013] This utility model also proposes a flow data acquisition device, which is applied to the non-contact metering data acquisition system; The traffic data acquisition device includes: an NFC card reader, a communication module, and a control module; The control module is connected to the NFC card reader and the communication module respectively; After the NFC reader reads the tag data from the NFC chip, the NFC reader outputs the tag data to the control module; The communication module is used to transmit data with a preset device; The control module is used to parse the tag data, obtain the traffic data, and output the traffic data to the preset device.

[0014] This utility model proposes a contactless data acquisition system, a water meter, and a flow data acquisition device. The contactless data acquisition system includes a water meter and a flow data acquisition device. The water meter includes an NFC chip, a flow acquisition device, and a water meter control unit. The water meter control unit is connected to both the NFC chip and the flow acquisition device. The flow acquisition device acquires the flow data of the fluid in the pipe where the water meter is located and outputs it to the water meter control unit. The water meter control unit writes the flow data into the NFC chip. The flow data acquisition device includes an NFC reader, a communication module, and a control module. The control module is connected to both the NFC reader and the communication module. When the NFC reader reads the tag data from the NFC chip, it outputs the tag data to the control module. The communication module transmits data with a preset device. The control module parses the tag data, acquires the flow data, and outputs the flow data to the preset device. This invention separates the communication module from the metering base meter by using a water meter and a flow data acquisition device. If one of them fails, only the corresponding module needs to be replaced, instead of replacing the entire unit, which reduces costs. In addition, when one of them is changed, only the corresponding approval needs to be applied for, which can speed up product iteration. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of an embodiment of the non-contact data acquisition system of this utility model; Figure 2 This is a schematic diagram of another embodiment of the non-contact acquisition system for metering data of this utility model.

[0017] Explanation of icon numbers: 10. Water meter; 130, NFC chip; 20. Traffic flow data acquisition device; 210, Control Module; 110, water meter control unit; 220, Communication Module; 120, Flow rate acquisition device; 230, NFC card reader.

[0018] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0021] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0022] Furthermore, in this utility model, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0023] This utility model proposes a non-contact data acquisition system, including: a water meter and a flow data acquisition device; like Figure 1 As shown, the water meter includes: an NFC chip, a flow acquisition device, and a water meter control unit; The water meter control unit is connected to the NFC chip and the flow acquisition device, respectively. The flow acquisition device is used to acquire the flow data of the fluid in the pipe where the water meter is located, and output it to the water meter control unit. The water meter control unit is used to write the flow data into the NFC chip; The traffic data acquisition device includes: an NFC card reader, a communication module, and a control module; The control module is connected to the NFC card reader and the communication module respectively; After the NFC reader reads the tag data from the NFC chip, the NFC reader outputs the tag data to the control module; The communication module is used to transmit data with a preset device; The control module is used to parse the tag data, obtain the traffic data, and output the traffic data to the preset device.

[0024] It should be noted that the water meter and the flow data acquisition device are physically independent, with no physical circuit connection or electrical contacts between the two devices. Their data interaction is entirely achieved through contactless near-field communication (NFC) technology. The water meter is installed on the pipeline to detect the flow rate of the fluid; the flow data acquisition device is held by the operator near the water meter to acquire the flow rate data via NFC technology.

[0025] It's easy to understand that one flow data acquisition device can collect flow data from multiple water meters. This invention integrates a communication module into the flow data acquisition device. After acquiring the flow data from the water meters, it outputs the data to a pre-set device. Compared to solutions that integrate the communication module into the water meter, this invention eliminates the need to replace the integrated water meter when the communication module or the water meter itself is damaged; only the flow data acquisition device needs to be replaced or repaired. Furthermore, since the flow data acquisition device can collect flow data from multiple water meters, the number of communication modules can be reduced, lowering costs. Correspondingly, when the water meter itself is damaged, only the damaged water meter needs to be replaced, without affecting the flow data acquisition device.

[0026] The flow acquisition device serves as the sensing unit of the system, responsible for real-time monitoring of the fluid flowing through the pipeline, acquiring flow data, and outputting it to the water meter control unit. The flow acquisition device can be an impeller-type flow acquisition device, a turbine-type flow acquisition device, an electromagnetic flow acquisition device, or an ultrasonic flow acquisition device, etc.

[0027] The water meter control unit writes the flow data into the NFC chip. It should be noted that the technology for writing or reading data from an NFC chip is very mature and will not be described in detail here. The water meter control unit is an MCU or an FPGA. For example, the MCU connects to the flow acquisition device via I / O ports to collect its output flow-related signals in real time; simultaneously, it connects via SPI or... The serial communication interface establishes a data connection with the NFC chip.

[0028] The NFC chip uses a passive tag chip compliant with the ISO 15693 standard, such as ST's M24LR series. This chip has a built-in EEPROM memory with a capacity of no less than 2Kbit, used to store various data written by the water meter control unit, including but not limited to: cumulative flow value, device unique identifier (ID), valve status flag bit, and fault code.

[0029] The flow acquisition device continuously monitors the fluid flow within the pipeline and converts it into an electrical signal, which is then output to the water meter control unit. The water meter control unit processes and calculates these signals to obtain standardized flow data (e.g., cumulative water consumption of 150.5 cubic meters). Subsequently, the water meter control unit writes the processed flow data into a designated storage area of ​​the NFC chip via a serial bus protocol.

[0030] The traffic data acquisition device specifically includes: a control module, an NFC card reader, and a communication module.

[0031] The NFC reader has a reader chip (which can operate at a frequency of 13.56MHz), such as NXP's PN512. When the reader is within effective range (typically 1-5 cm) of the NFC chip of the water meter 10, it can activate the NFC chip through radio frequency field energy and read all the tag data stored inside it in a contactless manner.

[0032] The control module can be an MCU or an FPGA. It connects to the NFC reader via a UART or SPI interface, receives the raw tag data, and parses, verifies, and decodes the data to extract valid traffic information. After successfully parsing the traffic data, the control module frames the data according to a preset communication protocol (such as COAP or MQTT) and then sends it to a remote, preset device, such as a cloud platform server or a data receiving platform in a water management center. The communication module can be a pluggable module of different standards such as NB-IoT, 4G, and LoRa for easy replacement.

[0033] In addition, the R&D personnel determine the preset device for data transmission with the communication module based on specific application requirements; the preset device can be a server or a mobile terminal, etc.

[0034] In addition, the water meter control unit encrypts the flow data and writes it into the NFC chip, forming tag data in the NFC chip. The control module parses (decrypts) the tag data to retrieve the flow data again. It should be noted that there are many publicly available algorithms for encrypting content in NFC technology, such as AES or RSA, etc. These will not be elaborated upon here.

[0035] Furthermore, it is important to emphasize that this invention separates the communication module from the metering base. When either the communication module or the metering base changes, only the corresponding change application needs to be approved; two separate approvals are not required. For example, when the communication module changes, only a wireless equipment type approval application needs to be submitted for the changed flow data acquisition device, without affecting the water meter. This invention can accelerate product iteration.

[0036] This utility model proposes a contactless data acquisition system for metering, comprising: a water meter and a flow data acquisition device; the water meter includes: an NFC chip, a flow data acquisition device, and a water meter control unit; the water meter control unit is connected to the NFC chip and the flow data acquisition device respectively; the flow data acquisition device is used to acquire the flow data of the fluid in the pipe where the water meter is located and output it to the water meter control unit; the water meter control unit is used to write the flow data into the NFC chip; the flow data acquisition device includes: an NFC card reader, a communication module, and a control module; the control module is connected to the NFC card reader and the communication module respectively; when the NFC card reader reads the tag data of the NFC chip, the NFC card reader outputs the tag data to the control module; the communication module is used to transmit data with a preset device; the control module is used to parse the tag data, acquire the flow data, and output the flow data to the preset device. This invention separates the communication module from the metering base meter by using a water meter and a flow data acquisition device. If one of them fails, only the corresponding module needs to be replaced, instead of replacing the entire unit, which reduces costs. In addition, when one of them is changed, only the corresponding approval needs to be applied for, which can speed up product iteration.

[0037] In one example, such as Figure 2 As shown, the flow acquisition device includes: an impeller metering module and a non-magnetic signaling needle plate; The impeller metering module is mechanically connected to the non-magnetic signaling needle plate; When the impeller in the impeller metering module is driven by the fluid, it rotates and outputs a mechanical rotation signal to the non-magnetic signaling needle plate. The non-magnetic signaling needle disk is electrically connected to the water meter control unit and is used to convert the mechanical rotation signal into a corresponding pulse electrical signal and output it to the water meter control unit. The water meter control unit is used to calculate the pulse electrical signal and obtain the flow rate data of the fluid.

[0038] It should be noted that its core component is a multi-bladed impeller made of corrosion-resistant engineering plastics (such as PPS or reinforced polyamide). This impeller is supported by a shaft and installed within the metering chamber. When fluid (such as water) flows through the pipe, it impacts the impeller blades, driving the impeller to rotate. The impeller's rotational speed is highly linearly related to the instantaneous flow velocity of the fluid. The impeller's rotation is transmitted and reduced in speed through a gearbox consisting of multiple plastic gears.

[0039] In one feasible example, the non-magnetic signaling needle disk includes a precision inductor coil mounted on a circuit board and a metal induction plate (such as a copper plate or a ferrite plate) fixed on the pointer dial.

[0040] The rotation of the impeller metering module drives the pointer dial and metal induction plate to rotate via gears. When the metal induction plate rotates directly above the inductor coil, it changes the electromagnetic field of the coil, causing a slight but detectable decrease in its inductance. When the metal induction plate moves away from the coil, the inductance returns to its original value. The detection circuit inside the non-magnetic signaling dial (usually an LC oscillator circuit) converts this periodic change in inductance into a series of regular, standard pulse electrical signals. The output of the non-magnetic signaling dial is electrically connected to the input / output (I / O) pins of the water meter control unit, outputting the aforementioned pulse electrical signals in real time.

[0041] In another feasible example, the pointer dial of the non-magnetic signaling needle disk has a uniformly distributed grid or reflective strips. On the circuit board below the needle disk, directly opposite the rotation path of the grid, an infrared emitter and an infrared receiver are mounted.

[0042] The impeller rotation drives the grid disk to rotate. As the grid passes between the infrared pairs, it periodically blocks the infrared beam. The receiving tubes correspondingly output a series of "bright-dark-bright" changing signals, which, after being processed by the shaping circuit, form a pulse electrical signal proportional to the impeller rotation speed. The water meter control unit captures and counts the pulse signal at its edges. The system undergoes rigorous calibration before leaving the factory to accurately determine the fluid volume corresponding to each pulse, i.e., the meter coefficient K (unit: pulses / liter). Therefore, the water meter control unit can obtain high-precision cumulative flow data by performing a simple calculation: cumulative flow = total pulse count × K value.

[0043] The flow acquisition device proposed in this example has the advantages of high impeller-type metering sensitivity and wide range. Most importantly, by completely eliminating magnets and adopting the principle of electromagnetic induction, this water meter possesses fundamental anti-magnetic attack capabilities. Strong external magnetic fields cannot interfere with its normal metering, greatly ensuring the accuracy and fairness of the metering data and effectively preventing water theft losses for water companies. At the same time, this sensing method has extremely low power consumption, making it ideal for the water meter's internal battery power requirements that can last for several years.

[0044] The sensor is preferably implemented in one of the following two ways: Hall effect sensors: Miniature magnets are embedded in the valve's transmission components (such as valve stems or gears), and a Hall effect sensor chip (such as TI's DRV5032) is mounted in a fixed position. When the valve moves, the relative position of the magnet and the sensor changes, causing a change in the output level signal, thereby determining whether the valve is in a fully open, fully closed, or intermediate position.

[0045] Microswitches / limit switches: Through mechanical structure design, the valve can trigger the corresponding physical switch when it reaches the fully open or fully closed position, generating a switching signal.

[0046] The sensor's output is electrically connected to the general-purpose I / O pins of the water meter control unit, feeding back the detected status signal to the water meter control unit. The water meter control unit encapsulates the calculated cumulative flow data and the read valve status data (e.g., "0x01" represents fully open, "0x00" represents fully closed, and "0x02" represents fault / intermediate state) to form a complete frame of status information, and then writes it together into the designated storage area of ​​the NFC chip.

[0047] By integrating valve status monitoring, the data dimensions of the water meter and the functionality of the system are greatly enriched. This allows water companies or maintenance personnel to not only remotely obtain water consumption information, but also to monitor the actual operating status of valves in real time.

[0048] The water meter also includes: a first power supply module; The first power module is connected to the NFC chip, the water meter control unit, and the non-magnetic signal transmitter, respectively, and is used to provide corresponding operating voltages to each of them. It is easy to understand that the operating voltages of the NFC chip, the water meter control unit, and the non-magnetic signal transmitter can be the same or different. When the operating voltages of the NFC chip, the water meter control unit, and the non-magnetic signal transmitter are different, the first power module needs to perform voltage conversion to output different operating voltage values.

[0049] The communication module includes: an NB-IoT module, a 4G module, a LoRa module, or a LoRaWAN module; The control module is electrically connected to the NB-IoT module, 4G module, LoRa module, or LoRaWAN module respectively.

[0050] It should be noted that NB-IoT modules feature ultra-low power consumption, wide coverage, and carrier-grade management, perfectly matching the needs of large-scale, distributed deployments in smart water management. Water companies do not need to build their own networks; they can quickly go online using existing cellular networks, making them suitable for public networks and easy to deploy.

[0051] 4G modules offer wide network coverage, good mobility, low latency, and high transmission speeds.

[0052] For water utilities in remote areas (without cellular coverage) or those that want complete control over their data and want to avoid long-term data charges (such as large industrial and mining enterprises or closed parks), LoRa modules / LoRaWAN modules can be used.

[0053] It is easy to understand that the specific communication module can be determined by the R&D personnel based on the actual application scenario.

[0054] The flow data acquisition device further includes: a second power supply module; The second power module is connected to the NFC reader, the communication module, and the control module respectively, and is used to provide the corresponding operating voltage to the NFC reader, the communication module, and the control module respectively.

[0055] The second power module may include a voltage conversion circuit 242 (usually a multi-output DC-DC switching power supply circuit) connected to each power-consuming unit to provide the NFC card reader, communication module and control module with the corresponding operating voltage.

[0056] In one example, the second power module includes a connected battery module and a voltage conversion circuit; The voltage conversion circuit is connected to the NFC reader, the communication module and the control module respectively, and is used to convert the output voltage of the battery module and output the corresponding working voltage to the NFC reader, the communication module and the control module respectively. The flow data acquisition device also includes: a voltage detection module; The detection end of the voltage detection module is connected to the output end of the battery module, and the output end is connected to the control module; the voltage detection module is used to detect the output voltage value of the battery module and output it to the control module. The control module is used to output a power alarm signal to a preset device through the communication module when the voltage of the battery module is less than the preset voltage.

[0057] It is easy to understand that, Battery module: As the power source for the system, a high-capacity primary lithium thionyl chloride battery pack is preferred (e.g., two ER26500 batteries connected in series to provide a nominal voltage of 7.2V), or a rechargeable lithium polymer battery pack. This battery module is responsible for providing raw power to the entire data acquisition device.

[0058] Voltage conversion circuit: Its core is a multi-output DC-DC power management chip. This circuit is connected to the stage following the battery module to efficiently convert and stabilize the unstable output voltage of the battery module (which gradually decreases as it discharges). For example, it can convert a 7.2V input voltage into: one stable 3.3V to power the core I / O of the NFC reader and control module; and one 4.0V that can provide a larger current, specifically to support the peak power consumption of the communication module when transmitting signals.

[0059] This example adds a voltage sensing module. The sensing pin (typically a high-impedance input pin) of this module is directly connected to the output of the battery module to monitor its open-circuit voltage in real time. The output of this module is then connected to the analog-to-digital converter (ADC) pin of the control module. The voltage sensing module can be a simple resistor divider network combined with an ADC, or it can be an integrated voltage monitoring chip (such as TI's TPS3839). Its task is to continuously or periodically sample the output voltage value of the battery module, convert this analog voltage value into a digital value, and output it to the control module.

[0060] The voltage threshold (e.g., 3.2V) is determined by the R&D team. Alternatively, this voltage threshold can be carefully set based on the discharge characteristics of the selected battery module, typically located at the critical point just before the battery's effective energy is depleted. The control module continuously reads the voltage value sent by the voltage detection module 25 and compares it with the preset threshold. When the control module determines that the battery module's voltage value is lower than the preset voltage threshold, it immediately initiates an alarm process and outputs a power alarm signal.

[0061] This example proactively monitors battery voltage and issues early warnings before the battery runs out, giving water utilities maintenance personnel ample time (typically weeks or months) to plan and execute battery replacement tasks. This completely avoids data acquisition interruptions caused by sudden power outages, ensuring data continuity. It upgrades the traditional "periodic inspection and battery replacement" model to a precise "on-demand maintenance" model. Maintenance personnel no longer need to perform unnecessary on-site inspections of numerous normal devices; they only need to maintain the specific devices that receive alarms, significantly saving manpower, time, and transportation costs.

[0062] This utility model also proposes a water meter that is applied to the aforementioned non-contact data acquisition system; The water meter includes: an NFC chip, a flow acquisition device, and a water meter control unit; The water meter control unit is connected to the NFC chip and the flow acquisition device, respectively. The flow acquisition device is used to acquire the flow data of the fluid in the pipe where the water meter is located, and output it to the water meter control unit. The water meter control unit is used to write the flow data into the NFC chip.

[0063] The specific structure of the water meter is as described in the above embodiments, and it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be elaborated here.

[0064] This utility model also proposes a flow data acquisition device, which is applied to the non-contact metering data acquisition system; The traffic data acquisition device includes: an NFC card reader, a communication module, and a control module; The control module is connected to the NFC card reader and the communication module respectively; After the NFC reader reads the tag data from the NFC chip, the NFC reader outputs the tag data to the control module; The communication module is used to transmit data with a preset device; The control module is used to parse the tag data, obtain the traffic data, and output the traffic data to the preset device.

[0065] The specific structure of the traffic data acquisition device is as described in the above embodiments, and it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be elaborated here.

[0066] The above description is only an optional embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A non-contact data acquisition system for metering data, characterized by, include: Water meters and flow data acquisition devices; The water meter includes: an NFC chip, a flow acquisition device, and a water meter control unit; The water meter control unit is connected to the NFC chip and the flow acquisition device, respectively. The flow acquisition device is used to acquire the flow data of the fluid in the pipe where the water meter is located, and output it to the water meter control unit; The water meter control unit is used to write the flow data into the NFC chip; The traffic data acquisition device includes: an NFC card reader, a communication module, and a control module; The control module is connected to the NFC card reader and the communication module respectively; After the NFC reader reads the tag data from the NFC chip, the NFC reader outputs the tag data to the control module; The communication module is used to transmit data with a preset device; The control module is used to parse the tag data, obtain the traffic data, and output the traffic data to the preset device.

2. The non-contact metrology data acquisition system of claim 1, wherein, The flow acquisition device includes: an impeller metering module and a non-magnetic signal transmitting needle plate; The impeller metering module is mechanically connected to the non-magnetic signaling needle plate; When the impeller in the impeller metering module is driven by the fluid, it rotates and outputs a mechanical rotation signal to the non-magnetic signaling needle plate. The non-magnetic signaling needle disk is electrically connected to the water meter control unit and is used to convert the mechanical rotation signal into a corresponding pulse electrical signal and output it to the water meter control unit. The water meter control unit is used to calculate the pulse electrical signal and obtain the flow rate data of the fluid.

3. The non-contact metrology data acquisition system of claim 2, wherein, The flow acquisition device also includes: a sensor; The sensor is electrically connected to the water meter control unit and is used to detect the conduction status of the valve and feed the status back to the water meter control unit. The water meter control unit writes the flow data and valve status data into the NFC chip.

4. The non-contact metrology data acquisition system of claim 2, wherein, The water meter also includes: a first power supply module; The first power module is connected to the NFC chip, the water meter control unit, and the non-magnetic signal transmitter, respectively, and is used to provide the corresponding operating voltage to the NFC chip, the water meter control unit, and the non-magnetic signal transmitter.

5. The contactless acquisition system of metrology data according to any of claims 1 to 4, characterized in that, The communication module includes: an NB-IoT module, a 4G module, a LoRa module, or a LoRaWAN module; The control module is electrically connected to the NB-IoT module, 4G module, LoRa module, or LoRaWAN module respectively.

6. The contactless metrology data acquisition system of claim 5, wherein, The flow data acquisition device further includes: a second power supply module; The second power module is connected to the NFC reader, the communication module, and the control module respectively, and is used to provide the corresponding operating voltage to the NFC reader, the communication module, and the control module respectively.

7. The contactless metrology data acquisition system of claim 6, wherein, The second power module includes a connected battery module and a voltage conversion circuit; The voltage conversion circuit is connected to the NFC reader, the communication module and the control module respectively, and is used to convert the output voltage of the battery module and output the corresponding working voltage to the NFC reader, the communication module and the control module respectively. The flow data acquisition device also includes: a voltage detection module; The detection end of the voltage detection module is connected to the output end of the battery module, and the output end is connected to the control module; the voltage detection module is used to detect the output voltage value of the battery module and output it to the control module. The control module is used to output a power alarm signal to a preset device through the communication module when the voltage of the battery module is less than the preset voltage.

8. A water meter characterized by Applied to the non-contact acquisition system for metering data as described in any one of claims 1 to 7; The water meter includes: an NFC chip, a flow acquisition device, and a water meter control unit; The water meter control unit is connected to the NFC chip and the flow acquisition device, respectively. The flow acquisition device is used to acquire the flow data of the fluid in the pipe where the water meter is located, and output it to the water meter control unit; The water meter control unit is used to write the flow data into the NFC chip.

9. A flow data acquisition device, characterized by Applied to the non-contact acquisition system for metering data as described in any one of claims 1 to 7; The traffic data acquisition device includes: an NFC card reader, a communication module, and a control module; The control module is connected to the NFC card reader and the communication module respectively; After the NFC reader reads the tag data from the NFC chip, the NFC reader outputs the tag data to the control module; The communication module is used to transmit data with a preset device; The control module is used to parse the tag data, obtain the traffic data, and output the traffic data to the preset device.

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